This is the maya version (.OBJ for other 3D packages also available) which has animated textures going in sequence, can easily be reduced or changed as needed. Model is about 80k poly but almost half of them were the outer rim bolts which has been placed seperately in a layer. Plenty of places where polygions can be reduced substantially. If this item is popular enough a extremely low poly version will become available.

All textures included, several types. Should be relatively straight forward to change or adjust to meet your needs!